Download Android Studio Essentials by Belen Cruz Zapata PDF

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Org/. The configuration for the build process is declared in the Gradle build files included in the Android projects. gradle file. Some of the main options we can configure in this file are as follows: • Variants: We can configure different versions of our application using the same project, for example, to create demo and paid versions. The variants depend on the build type (the buildTypes tag) and product flavor configurations (the productFlavors tag). For example, two build types are debug and release, and two product flavors are demo and paid.

A new layout will be opened in the editor. xml. Now we can edit the new layout variation such that it perfectly conforms to landscape mode. [ 48 ] Chapter 5 Similarly, we can create a variation of the layout for extra-large screens. Select the Create layout-xlarge Variation option. xml. Android divides into the actual screen sizes small, normal, large, and xlarge: • Small: Screens classified in this category are at least 426 dp x 320 dp • Normal: Screens classified in this category are at least 470 dp x 320 dp • Large: Screens classified in this category are at least 640 dp x 480 dp • Xlarge: Screens classified in this category are at least 960 dp x 720 dp A dp is a density-independent pixel, equivalent to one physical pixel on a 160 dpi screen.

Our main layout has a relative layout as the root element. • Widgets: This category contains options for text views, buttons, checkboxes, switches, image views, progress bars, spinners, and web views. They are the most commonly used components, and they are used in most layouts. • Text Fields: These are editable fields that contain different categories of inputs under which users can type text. The difference between the various options is the type of text users can type. • Containers: This category groups components that share some common behavior.